Cylinder hone



NOV. 10, 1931. HALL CYLINDER HONE Filed Dec. 10. 1928 Y a Nov. 10.-1931" 7 UNITED STATES PAT NT- ounce m A. BALL, TOLEDO, OHIO, 58816 1103 TO m HALL mussel-came COK- rm, O1 TOLEDO, OHIO, A' CORPORATION 01' OHIO CYLINDER EOHE- Application med December 10, 1m. max Io. mm.

This. invention relates to a cylinder hone a correspondingly threaded ca 12 and lock intended primarily for the production or the reconditioning of cylinders, and its object, generall means or supporti and adjusting the grinding elements. Sue of the im ortant eatures of the invention isthe rovlsion of a floating support for the respective grinding,

elements whereby the latter automatically 1o adjust themselves individually to the work. Thus compensation .is secured for unequal wear, independently of the position of the means by which the inding elements are supported and ideal The body which ll carries the grin mg elements is preferably formed in one integral iece encompassing a supporting core with ra iall projecting pms havmg opposed inclined sur aces, or supporting a member with oppositely inclined surfaces, on which the grinding elements are seated the core bein axially adjustable'to vary the projection o the pins. The characteristic features of the invention, together withits mode of operation and the advantages thereof, will be more fully described in connection with the accompanying drawings illustrating the same.

In the drawings: Figure 1 is a central lon 'tudinal section. Figure 2 is a section ta en on lme 22 of Figure 1.

' Fi re 3 is a view similar to Figure 1, but showing a modified form of the invention. As illustrated in Figures 1 and 2, the device comprises a number of 'nding elements 5 arran (1 about a centra axis. Each element 5 is set in a jacket 6, which is secured in a carrier 7. These carriers are supported by a body 8 which is provided with radially projecting wings 9'having opposed parallel surfaces between which the carriers 7 are ided for radial and longitudinal movement. ins 9 extend through the carriers 7 and have sufiicient clearance on the wings to permit the carriers with the grinding elements to automatically adjust themselves to compensate for wear. I

The body 8 is formed at one end with 'a head 10, having a concave spherical seat 11. The head 10 is externally threaded to receive stated, is to provide improved nut 13, and these together wi a washerl co-operate with the head 10 to form a herical socket to receive the correspon 'ngly shaped head 15 of a drive shaft 16. This constltutes a universal connection between the shaft 16 and the tool body 8 and driving force is mparted to the latter by radial pins 17 wlnch are mounted in the head 15 and project into slots 18 formed in the head 10. The drive shaft 16 and the means by which it is connected to. the body 8 are immaterial to the present invention.

In one form of the invention, as shown in F1 re 1, the shaft 16 is formed with a centra longitudinal bore for receiving a spindle 19, which may be used to ad'ust a screw threaded plug 19 within the body 8, and

thereby exert pressure a inst the head 20.

The head 20 is connecte with the heads 21 and 22, which are slidably ad'ustable within a bore 23 formed in the b' y 8. The reactive heads 20 and 21- are formed with o hque surfaces 24 and 25 facing in the same dlreetion and preferably conical, and these surfaces, as the heads are adjusted longitudmally, have a wedge action against the inner ends of the pins 26, which are mounted for adjustment radially of the body 8. The

pins 26 are formed at their outer ends with sloping surfaces 27, preferably conical, which engage corresponding recesses 28 formed at the bottom of the carriers 7. Before the toolis ad usted to the work, the carriers 7 are held in engagement with the conical ends 27 of the pins by any suitable yieldable means such as the coil springs 29 which encompass the body 8 and are seated in grooves 30 formed in the ends of the carriers 7.

By a longitudinal adjustment of the central core comprising the heads 20 and 21 with their conical surfaces 24 and 25, all of the pins 26 are adjusted equally. It will be noted, however, that the centers of pins 26 at opposite ends of the body 8 are farther apart than the centers of the corresponding surfaces of the recesses 28. This allows for a limited combined radial and longitudinal movement of each carrier 7 with respect to its support, so that the respective grinding elements 5 have a floating support and ma automatically adjust themselves individua l? to compensate for unequal wear. It is unerstood, of course, that m the normal 0 er- 5 ation of the device, the lower portions 0 the grinding elements come into action first and will wear ofl' faster than the upper portions. The automatic adjustment of the grinding elements is effected without interfering in any way with the free adjusting movement of the pins 26 or of the heads 20 and 21 which control the adjustment. In other words, the compensating movement of the grinding elements ma take place without causing any tendenc or the pins 26 to bind. It will also be note that the carriers 7 may be reversed end for end wherever the condition of the I grinding elements makes it advisable to do so.

Figure 3 shows a modified construction for effecting substantially the same result. The elements which do not differ materially from those shown in Figure 1 are designated by the same reference characters. Each carrier 31, however, which carries the grinding element 5, has its inner face formed with oppositely inclined flat surfaces 32, instead of recesses like those shown at 28 in Figure 1. The pins 33 are formed with shoulders 34, which support a cradle 35 having op ositely inclined seats 36 on which the sur aces 32 have a floating su rt. Each carrier 31 has studs 37 mounte in its ends and provided with peripheral grooves which are engaged by the springs 29 to hold the carrier on its seat.

In Figure 3, the plug 19 is omitted and suitable means will be provided to cause the end of the spindle 19 to bear against the head 20. Pressure is exerted upwardly 40 against the head 20 by a spring 38 seated within a cap 39 secured by bolts 40, or other suitable means, to the end of the body 8.

In both forms of the invention herein described the two conical surfaces 24 and 25 taper in the same direction and there is no relative adjustment between them.

While I have illustrated and described in considerable detail two ways in which the invention may be embodied it is to be understood that this is merely for the purpose of illustration, and that many other modifications may be devised without departing from the scope of the invention as claimed.

What I claim is:

1. In a cylinder bone, a plurality of grinding stone carriers, a rotatable body having radial wings with opposed parallel faces between which the respective carriers are held for rotation with the body, seats against which the carriers rest, and means for adjusting said seats radially and maintaining them always at equal distances from the axis of the body, said carriers being independently movable on said seats longitudinally and radially with respect to the body.

2. In a cylinder hone, a plurality of grindin stone carriers, a rotatable body having ra ial win with opposed parallel faces between whic the res ective stone carriers are held for rotation with the body, seats with oppositely inclined surfaces on which the carriers have a floating support to permit independent compensating movements thereof,

and means for adjusting said seats outwardl 3. In a cylinder hone, a body rotatab e about a longitudinal axis, grinding stone carriers arranged about the body, guide means between w ich the respective carriers are held against circumferential displacement with respect to the body, the inner face of each of said carriers having oppositely inclined surfaces, means carried by said body having correspondingly inclined seats on which said surfaces rest, said carrier being movable longitudinally and radially with respect to sai seats.

4. In a cylinder bone, a plurality of grinding stone carriers, a rotatable body having radial wings with opposed parallel surfaces between which the respective carriers are held for rotation with the body, seat-s carried by the body, each of said carriers and the respective seats having two oppositely inclined respectively co-engaging surfaces constituting a floating support for inde endent longitudinal rocking movements 0 the carriers, and means for adjusting said seats in unison radially and equally.

5. In a cylinder hone, a rotatable body, grinding stone carriers arranged about the body, means preventing circumferential dislacement of said carriers with respect to the ody, seats carried by the body, each of said carriers and the respective seats having two oppositely inclined respectively co-engaging surfaces, resilient means tending to move each end of each carrier toward the axis of the body, said carriers being otherwise free to move individually on said body and to automatically adjust themselves to compensate for wear, and means for radially adjusting said seats in unison.

6. In a cylinder hone, a body rotatable about a longitudinal axis, grinding stone carriers arranged about the body, guide mem-' bers between which the respective carriers are held against circumferential displacement with respect to the body and permitted to have longitudinal radial rocking movements, means adjustable radially of the body beneath each carrier and presenting spaced bearing surfaces, each carrier having oppositely inclined surfaces which rest on said spaced bearing surfaces and constitute a floating support for the carrier, and means for radially adjusting said first means.

7. In a cylinder hone, a body rotatable about a longitudinal axis, grinding stone carriers arranged about the body, guide means havingparallel surfaces between which the respective carriers are held against circum- 8. In a cylinder hone, a plurality of grindi stone carriers, a rotatable body having rlidial win s with opposed parallel surfaces between w ich the respective carriers are held for rotation with the body, radially adjustable means projecting from the body beneath each carrier and terminatingin oppositely inclined bearing surfaces, the respective carriers having sinularly mclmed surfaces resting on said bearing surfaces re-' silient means tending to move each en of each carrier toward the axis of the body, said carriers being otherwise free to move individually on said body and to automatlcally adjust themselves to compensate for wear.

9. In a cylinder hone, a plurality of grinding stone carriers, a rotatable body having radial wings with opposed parallel surfaces between which the res ective carr ers are held for rotationwith the y, a seating element projecting from the body beneath each carrier and terminating in oppositely mcl1ned bearing surfaces, means for adjust ng sald elements radially, the respective carriers haying similarly inclined surfaces resting on said bearing surfaces to constitute a floating support, and resilient means tending to move each end of each carrier toward the axis of the body.

' 10. In a cylinder hone, a rotatable body, a plurality of grinding stone earners arranged about the body, supporting members carried by said body and having oppositely inclined surfaces on which the carriers have longitudinal angular floating support, and an adjusting member within the body haying similarly disposed inclined surfaces, said su porting members having portions engageab e by the inclined surfaces of the ad ustin member to vary the distance from the axis of the body to the inclined surfaces against which the carriers have their floating support.

. 11. In a cylinder hone, a rotatable body, a series of stone carriers .arranged about the same. radially adjustable supports having inclined surfaces on which opposite ends of the carriers have longitudinal angular floating support, and adjusting means operable to project the radially adjustable supports equally at both ends of the carriers.

12. In a cylinder hone, a rotatable body, a

series of stone carriers arranged about the same, an adjusting member disposed axially of the body and having two conical surfaces similarly tapered in the same direction, and

means resting on said conical-surfaces and .justable in said bod for longitudinal rockin providing a floating support for said carriers, whereby the stones carried thereby can individually adjust themselves to maintain a position parallel to the cylinder regardless of un ual wear.

13. a cylinder hone, a hollow rotatable body having longitudinally extendi face grooves, a 'member longitudina y adandhavmg two conical portions facing in t e same direction, means for adjusting said memberin the body, means coacting with the cone portions of said member and radially movable in the bqly by adjustment of said member, and stone carriers in said grooves and mounted on said last means for radial adjustment therewith and adjustment relative to each otherand the y. v

14. In a cylinder hone, a plurality of stone carriers, a rotatable 'bod having opposed radially disposed paralle surfaces between which the respective carriers are held for rotation with the body, means located the body inwardly of said carriers and ro- -viding individual supports therefor on w ich each carrier may have longitudinal rockin movements relative to the body and to the other carriers to accommodate the workin face of its stone to the surface acted on, an means interiorly of the body coactin said first means and operable to radiafiy adjust the carrier supports thereof in unison. 15. In a cylinder hone, a rotatable body, rinding stone carriers arranged about the ody, means preventing circumferential displacement of said carriers with respect to the body, each of said carriers having an inwardly disposed inclined surface, means carried with by the body having cooperatin surfaces engageable by said first mentione surfaces and constituting a floating support for each car:

rier to perm1t compensating movements thereof relative to the other carriers, means interiorly of the body operable to move said last mentioned means to radially adjust its carrier supporting surfaces, and resilient means tendin to move each end of each carrier toward the axis of the body.

16. In a cylinder hone, a'rotatable body, a plurality of carriers arranged about the body, an adjusting member withln the body having inclined surfaces, radial elements en geable by said inclined surfaces and pro ectible thereby throu h operation of the adjusting member, said elements having inclined surfaces at their outer ends forming seats for the respective carriers, said carriers being' held against circumferential displacement by the body and coacting with the inclined surfaces of the radial .elements to permit and guide longitudinal angular movements of the carriers relative to the body and each other, and resilient means tending to move each end. of each carrier toward the body axis.

17. In a cylinder hone, a body, a plurality of stone'carriers arranged around the body and disposed lengthwise thereof, means holding the carriers to the bod for yielding outward radial movements re ative thereto, and radially adjustable supports on which the carriers rest for lon tudinal an lar movements relative to eac other, the ody and su ports.

18. n a cylinder bone, a body, a plurality of stone carriers arranged around the body and disposed lengthwise thereof, means yieldingly holding the carriers to the body and permitting outward radial movements thereof, a cone member disposed interiorl of the body and adjustable axially thereo and supports on which the carriers rest for longitudinal independent angular adjustment relative to each other and to the su ports in radial planes substantially parall zl to the body axis, said supports coacting with the cone member and being radially adjustable by axial adjustment of the cone member.

19. In a cylinder hone, a body, a plurality of stone carriers arranged around the body and disposed lengthwise thereof and guided thereby for longitudinal angular radial movements, resilient means tending to move each end of each carrier toward the body axis, adjusting means intcriorly of the body, and means intermediate said adjusting means and the carriers radially adjustable by adjustment of the adjusting means and providing a plurality of seats for each carrier and permitting independent guided movements of the carriers.

In testimony whereof I have hereunto signed my name to this specification.

ERNEST A. HALL. 

